- SELECT name, region FROM bbc x WHERE population < ALL (SELECT population/3 FROM bbc y WHERE y.name != x.name)

+

-E. SELECT name, region FROM bbc x WHERE population < ALL (SELECT population/3 FROM bbc y WHERE y.name != x.name)

{Select the code that would show the countries with a greater GDP then any country in Africa

{Select the code that would show the countries with a greater GDP then any country in Africa

|type="()"}

|type="()"}

−

- SELECT name FROM bbc WHERE gdp > ALL (SELECT MAX(gdp) FROM bbc WHERE region = 'Africa' AND gdp=0)

+

-A. SELECT name FROM bbc WHERE gdp > ALL (SELECT MAX(gdp) FROM bbc WHERE region = 'Africa' AND gdp=0)

−

+ SELECT name FROM bbc WHERE gdp > ALL (SELECT MAX(gdp) FROM bbc WHERE region = 'Africa' AND gdp IS NOT NULL)

+

+B. SELECT name FROM bbc WHERE gdp > ALL (SELECT MAX(gdp) FROM bbc WHERE region = 'Africa' AND gdp IS NOT NULL)

−

- SELECT name FROM bbc WHERE gdp > ALL (SELECT MIN(gdp) FROM bbc WHERE region = 'Africa' AND gdp IS NOT NULL)

+

-C. SELECT name FROM bbc WHERE gdp > ALL (SELECT MIN(gdp) FROM bbc WHERE region = 'Africa' AND gdp IS NOT NULL)

−

- SELECT name FROM bbc WHERE gdp > ALL (SELECT MAX(gdp) FROM bbc WHERE region = 'Africa' AND population IS NOT NULL)

+

-D. SELECT name FROM bbc WHERE gdp > ALL (SELECT MAX(gdp) FROM bbc WHERE region = 'Africa' AND population IS NOT NULL)

−

- SELECT name FROM bbc WHERE gdp > ALL (SELECT MAX(gdp) FROM bbc WHERE region = 'Europe' AND gdp IS NOT NULL)

+

-E. SELECT name FROM bbc WHERE gdp > ALL (SELECT MAX(gdp) FROM bbc WHERE region = 'Europe' AND gdp IS NOT NULL)

{Select the code that shows the countries with population smaller than Russia but bigger than Denmark

{Select the code that shows the countries with population smaller than Russia but bigger than Denmark

|type="()"}

|type="()"}

−

- SELECT name FROM bbc WHERE population < (SELECT population FROM bbc WHERE name='Denmark') AND population > (SELECT population FROM bbc WHERE name='Russia')

+

-A. SELECT name FROM bbc WHERE population < (SELECT population FROM bbc WHERE name='Denmark') AND population > (SELECT population FROM bbc WHERE name='Russia')

−

+ SELECT name FROM bbc WHERE population < (SELECT population FROM bbc WHERE name='Russia') AND population > (SELECT population FROM bbc WHERE name='Denmark')

+

+B. SELECT name FROM bbc WHERE population < (SELECT population FROM bbc WHERE name='Russia') AND population > (SELECT population FROM bbc WHERE name='Denmark')

−

- SELECT name FROM bbc WHERE population = (SELECT population FROM bbc WHERE name='Russia') AND population > (SELECT population FROM bbc WHERE name='Denmark')

+

-C. SELECT name FROM bbc WHERE population = (SELECT population FROM bbc WHERE name='Russia') AND population > (SELECT population FROM bbc WHERE name='Denmark')

−

- SELECT name FROM bbc WHERE population > (SELECT population FROM bbc WHERE name='Russia') AND population > (SELECT population FROM bbc WHERE name='Denmark')

+

-D. SELECT name FROM bbc WHERE population > (SELECT population FROM bbc WHERE name='Russia') AND population > (SELECT population FROM bbc WHERE name='Denmark')

−

- SELECT name FROM bbc WHERE population < (SELECT population FROM bbc WHERE name='Russia' AND population > (SELECT population FROM bbc WHERE name='Denmark')

+

-E. SELECT name FROM bbc WHERE population < (SELECT population FROM bbc WHERE name='Russia' AND population > (SELECT population FROM bbc WHERE name='Denmark')

</quiz>

</quiz>

[[Category:Quizzes]]

[[Category:Quizzes]]

Revision as of 10:56, 23 July 2012

Nested SELECT quiz
<quiz shuffle=none display=simple>
{Select the code that shows the name, region and population of the smallest country in each region
|type="()"}
-A. SELECT region, name, FROM bbc x WHERE population <= ALL (SELECT population FROM bbc y WHERE y.region=x.region AND population>0)
-B. SELECT region, name, population FROM bbc WHERE population <= ALL (SELECT population FROM bbc WHERE population>0)
+C. SELECT region, name, population FROM bbc x WHERE population <= ALL (SELECT population FROM bbc y WHERE y.region=x.region AND population>0)
-D. SELECT region, name, population FROM bbc x WHERE population = ALL (SELECT population FROM bbc y WHERE y.region=x.region AND population>0)
-E. SELECT region, name, population FROM bbc x WHERE population <= ALL (SELECT population FROM bbc y WHERE y.region=x.region AND population<0)

{Select the code that shows the countries belonging to regions with all populations over 50000
|type="()"}
-A. SELECT name,region,population FROM bbc x WHERE 50000 <= ALL (SELECT population FROM bbc y WHERE population>0)
+B. SELECT name,region,population FROM bbc x WHERE 50000 <= ALL (SELECT population FROM bbc y WHERE x.region=y.region AND y.population>0)
-C. SELECT name,region,population FROM bbc x WHERE 50000 = ALL (SELECT population FROM bbc y WHERE x.region=y.region AND y.population>0)
-D. SELECT name,region,population FROM bbc x WHERE 50000 >= ALL (SELECT population FROM bbc y WHERE x.region=y.region AND y.population>0)
-E. SELECT name,region,population FROM bbc x WHERE 500000 <= ALL (SELECT population FROM bbc y WHERE x.region=y.region AND y.population>0)

{Select the code that shows the countries with a third of the population of the countries around it
|type="()"}
+A. SELECT name, region FROM bbc x WHERE population < ALL (SELECT population/3 FROM bbc y WHERE y.region = x.region AND y.name != x.name)
-B. SELECT name, region FROM bbc x WHERE population = ALL (SELECT population/3 FROM bbc y WHERE y.region = x.region AND y.name != x.name)
-C. SELECT name, region FROM bbc x WHERE population > ALL (SELECT population/3 FROM bbc y WHERE y.region = x.region AND y.name != x.name)
-D. SELECT name, region FROM bbc x WHERE population < ALL (SELECT population*3 FROM bbc y WHERE y.region = x.region AND y.name != x.name)
-E. SELECT name, region FROM bbc x WHERE population < ALL (SELECT population/3 FROM bbc y WHERE y.name != x.name)

{Select the code that would show the countries with a greater GDP then any country in Africa
|type="()"}
-A. SELECT name FROM bbc WHERE gdp > ALL (SELECT MAX(gdp) FROM bbc WHERE region = 'Africa' AND gdp=0)
+B. SELECT name FROM bbc WHERE gdp > ALL (SELECT MAX(gdp) FROM bbc WHERE region = 'Africa' AND gdp IS NOT NULL)
-C. SELECT name FROM bbc WHERE gdp > ALL (SELECT MIN(gdp) FROM bbc WHERE region = 'Africa' AND gdp IS NOT NULL)
-D. SELECT name FROM bbc WHERE gdp > ALL (SELECT MAX(gdp) FROM bbc WHERE region = 'Africa' AND population IS NOT NULL)
-E. SELECT name FROM bbc WHERE gdp > ALL (SELECT MAX(gdp) FROM bbc WHERE region = 'Europe' AND gdp IS NOT NULL)

{Select the code that shows the countries with population smaller than Russia but bigger than Denmark
|type="()"}
-A. SELECT name FROM bbc WHERE population < (SELECT population FROM bbc WHERE name='Denmark') AND population > (SELECT population FROM bbc WHERE name='Russia')
+B. SELECT name FROM bbc WHERE population < (SELECT population FROM bbc WHERE name='Russia') AND population > (SELECT population FROM bbc WHERE name='Denmark')
-C. SELECT name FROM bbc WHERE population = (SELECT population FROM bbc WHERE name='Russia') AND population > (SELECT population FROM bbc WHERE name='Denmark')
-D. SELECT name FROM bbc WHERE population > (SELECT population FROM bbc WHERE name='Russia') AND population > (SELECT population FROM bbc WHERE name='Denmark')
-E. SELECT name FROM bbc WHERE population < (SELECT population FROM bbc WHERE name='Russia' AND population > (SELECT population FROM bbc WHERE name='Denmark')
</quiz>